As a place-name, San Justo may refer to:
- San Justo, Santa Fe— main township of the San Justo Department, Argentina
- San Justo Department (disambiguation), various places
- San Justo, Buenos Aires— town in La Matanza Partido, Argentina
- San Justo, Entre Ríos— town in Entre Ríos, Argentina
- San Justo, Zamora— municipality in the province of Zamora, Spain
|This disambiguation page lists articles associated with the title San Justo.
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